Weather Records on 17 September 1991

1,407 weather records were set or tied worldwide on 17 September 1991. Highest significance: Minnipa, AU.

Key Facts for 17 September 1991

On 17 September 1991, 1,407 weather records were set or tied at long-record stations worldwide.
923 were record highs and 234 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 50 monthly and 1,355 daily.
Minnipa set a daily record precipitation of 32.0 mm (1.3 in) on 17 September 1991.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 417 records.

Record Map

1,407 stations

1,407 station records on 17 September 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Minnipa	Australia	Record daily precipitation	32.0 mm (1.3 in)	65 of 100 (Major)
Minnipa Agricultural Centre	Australia	Record daily precipitation	28.2 mm (1.1 in)	64 of 100 (Major)
Port Kenny (Yandra)	Australia	Record daily precipitation	50.0 mm (2.0 in)	64 of 100 (Major)
Streaky Bay	Australia	Record daily precipitation	29.4 mm (1.2 in)	62 of 100 (Major)
Karcultaby	Australia	Record daily precipitation	37.0 mm (1.5 in)	61 of 100 (Major)
Poochera	Australia	Record daily precipitation	47.2 mm (1.9 in)	59 of 100 (Notable)
Yardea	Australia	Record daily precipitation	34.0 mm (1.3 in)	57 of 100 (Notable)
Menza	Russia	Record daily precipitation	28.6 mm (1.1 in)	57 of 100 (Notable)
Thurlga	Australia	Record daily precipitation	37.0 mm (1.5 in)	56 of 100 (Notable)
Port Kenny (Mount Cooper)	Australia	Record daily precipitation	48.6 mm (1.9 in)	54 of 100 (Notable)
Paso de San Antonio	Mexico	Record daily precipitation	159.8 mm (6.3 in)	53 of 100 (Notable)
Yankalilla	Australia	Record daily precipitation	26.0 mm (1.0 in)	50 of 100 (Notable)
Cuauhtemoc	Mexico	Record daily precipitation	56.9 mm (2.2 in)	49 of 100 (Notable)
Brindisi	Italy	Record daily precipitation	55.0 mm (2.2 in)	44 of 100 (Notable)
Middletown 4 W	United States	Record high minimum temperature	22.8 C (73.0 F)	44 of 100 (Notable)
Port Jervis	United States	Record high minimum temperature	21.1 C (70.0 F)	44 of 100 (Notable)
Yaninee	Australia	Record daily precipitation	26.2 mm (1.0 in)	43 of 100 (Notable)
Norfolk 2 SW	United States	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Storrs	United States	Record high minimum temperature	20.6 C (69.1 F)	43 of 100 (Notable)
Kingscote	Australia	Record daily precipitation	27.6 mm (1.1 in)	42 of 100 (Notable)
Rochester	United States	Record high minimum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Monte Carmelo	Brazil	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Todos Santos (Dge)	Mexico	Record daily precipitation	37.3 mm (1.5 in)	41 of 100 (Notable)
Newark Ag Farm	United States	Record high minimum temperature	22.2 C (72.0 F)	41 of 100 (Notable)
Excame	Mexico	Record low maximum temperature	20.0 C (68.0 F)	40 of 100 (Notable)
Frederick Police Brks	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Charlotteburg Rsvr	United States	Record high minimum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Alfred	United States	Record high maximum temperature	31.1 C (88.0 F)	40 of 100 (Notable)
W Pt	United States	Record high minimum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
State College	United States	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Warsaw 2 NW	United States	Record high minimum temperature	22.8 C (73.0 F)	40 of 100 (Notable)
Lake Bolac (Post Office)	Australia	Record daily precipitation	27.0 mm (1.1 in)	39 of 100 (Notable)
Santo Tomas (Cfe)	Mexico	Record low maximum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Poncitlan	Mexico	Record low maximum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Woodstock	United States	Record high minimum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Elmira	United States	Record high maximum temperature	35.0 C (95.0 F)	39 of 100 (Notable)
Renovo	United States	Record high minimum temperature	18.9 C (66.0 F)	39 of 100 (Notable)
Martinsburg E W Virginia Rgnl	United States	Record high maximum temperature	35.6 C (96.1 F)	39 of 100 (Notable)
Ny City Cntrl Park	United States	Record high minimum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Melrose	Australia	Record daily precipitation	34.8 mm (1.4 in)	38 of 100 (Notable)
Nuwara Eliya	Sri Lanka	Record high minimum temperature	14.4 C (57.9 F)	38 of 100 (Notable)
Presa Coyote	Mexico	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
Palo Verde	Mexico	Record low maximum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Charlotteburg Rsvr	United States	Record high maximum temperature	34.4 C (93.9 F)	38 of 100 (Notable)
Ithaca Cornell UNIV	United States	Record high minimum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Middletown 2 NW	United States	Record high minimum temperature	22.2 C (72.0 F)	38 of 100 (Notable)
Tagus	United States	Record daily snowfall	7.6 cm (3.0 in)	38 of 100 (Notable)
Clearwater	United States	Record high maximum temperature	28.3 C (82.9 F)	38 of 100 (Notable)
Goroke (Kangawall)	Australia	Record daily precipitation	26.0 mm (1.0 in)	37 of 100 (Notable)
Scarsdale	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Hamburg	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Seminole	United States	Record daily precipitation	46.5 mm (1.8 in)	37 of 100 (Notable)
Cape Bridgewater	Australia	Record daily precipitation	38.0 mm (1.5 in)	36 of 100 (Notable)
San Jeronimito	Mexico	Record low maximum temperature	25.0 C (77.0 F)	36 of 100 (Notable)
San Lucas Ojitlan	Mexico	Record low minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Eastport	United States	Record high maximum temperature	28.3 C (82.9 F)	36 of 100 (Notable)
Woodstock	United States	Record high maximum temperature	35.6 C (96.1 F)	36 of 100 (Notable)
Brockton	United States	Record high minimum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Sussex 1 NW	United States	Record high maximum temperature	34.4 C (93.9 F)	36 of 100 (Notable)
Bolivar	United States	Record high maximum temperature	30.6 C (87.1 F)	36 of 100 (Notable)

Counts by Type and Timescale

1,407 records

Records set or tied on 17 September 1991 by type: Highest daily maximum 411, Lowest daily maximum 167, Highest daily minimum 512, Lowest daily minimum 67, Heaviest daily rainfall 245, Heaviest daily snowfall 3, Deepest snow cover 2.

Records on 17 September 1991 by type
Record type	Records
Highest daily maximum	411
Lowest daily maximum	167
Highest daily minimum	512
Lowest daily minimum	67
Heaviest daily rainfall	245
Heaviest daily snowfall	3
Deepest snow cover	2

Records on 17 September 1991 by timescale: all-time 2, monthly 50, daily 1,355.

How Much Records Were Beaten By

1,110 broken records

Margins by which the 1,110 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 130.6. Ties are not counted.

Top 20 by Significance

17 September 1991

Top 20 records on 17 September 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1991	Minnipa, AU	daily rain	32.0 mm (1.3 in)	17.3 mm (0.7 in)	73 years	65 of 100 (Major)
17 September 1991	Minnipa Agricultural Centre, AU	daily rain	28.2 mm (1.1 in)	18.0 mm (0.7 in)	57 years	64 of 100 (Major)
17 September 1991	Port Kenny (Yandra), AU	daily rain	50.0 mm (2.0 in)	31.7 mm (1.2 in)	48 years	64 of 100 (Major)
17 September 1991	Streaky Bay, AU	daily rain	29.4 mm (1.2 in)	11.6 mm (0.5 in)	95 years	62 of 100 (Major)
17 September 1991	Karcultaby, AU	daily rain	37.0 mm (1.5 in)	23.0 mm (0.9 in)	48 years	61 of 100 (Major)
17 September 1991	Poochera, AU	monthly rain	47.2 mm (1.9 in)	14.9 mm (0.6 in)	26 years	59 of 100 (Notable)
17 September 1991	Yardea, AU	daily rain	34.0 mm (1.3 in)	12.4 mm (0.5 in)	95 years	57 of 100 (Notable)
17 September 1991	Menza, RU	daily rain	28.6 mm (1.1 in)	22.2 mm (0.9 in)	42 years	57 of 100 (Notable)
17 September 1991	Thurlga, AU	daily rain	37.0 mm (1.5 in)	23.0 mm (0.9 in)	24 years	56 of 100 (Notable)
17 September 1991	Port Kenny (Mount Cooper), AU	daily rain	48.6 mm (1.9 in)	35.4 mm (1.4 in)	30 years	54 of 100 (Notable)
17 September 1991	Paso de San Antonio, MX	daily rain	159.8 mm (6.3 in)	130.6 mm (5.1 in)	26 years	53 of 100 (Notable)
17 September 1991	Yankalilla, AU	daily rain	26.0 mm (1.0 in)	14.3 mm (0.6 in)	48 years	50 of 100 (Notable)
17 September 1991	Cuauhtemoc, MX	daily rain	56.9 mm (2.2 in)	41.9 mm (1.6 in)	16 years	49 of 100 (Notable)
17 September 1991	Brindisi, IT	daily rain	55.0 mm (2.2 in)	48.8 mm (1.9 in)	2 years	44 of 100 (Notable)
17 September 1991	Middletown 4 W, US	daily high min	22.8 C (73.0 F)	2.2 C (4.0 F)	113 years	44 of 100 (Notable)
17 September 1991	Port Jervis, US	daily high min	21.1 C (70.0 F)	2.8 C (5.0 F)	96 years	44 of 100 (Notable)
17 September 1991	Yaninee, AU	daily rain	26.2 mm (1.0 in)	16.4 mm (0.6 in)	6 years	43 of 100 (Notable)
17 September 1991	Norfolk 2 SW, US	daily high min	20.0 C (68.0 F)	1.7 C (3.1 F)	104 years	43 of 100 (Notable)
17 September 1991	Storrs, US	daily high min	20.6 C (69.1 F)	1.7 C (3.1 F)	102 years	43 of 100 (Notable)
17 September 1991	Kingscote, AU	daily rain	27.6 mm (1.1 in)	7.0 mm (0.28 in)	57 years	42 of 100 (Notable)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1796 to 1991

Records set or tied on this calendar date in each year from 1796 to 1991. 1991 had 1,407 records.

Counts for years before the ledger starts come from the same station rules.

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 1991-09-17: CSV or JSON. Field meanings are on the data page.

Sources: Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	1,083
20 to 40	21
40 to 60	4
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1